• Cap is made from a blend of PBT and PET plastics for increased strength, stiffness and resistance to warpage
  • Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your MerCruiser engine.
  • Solid brass inserts resist corrosion and electrical pitting for long service life
  • High strength to weight ratio for durability and resistance to thermal cracking
  • Designed to resist RFI interference with onboard electronics

perfect fit on our 1999 Mercruiser 7.4 MPI